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  “I don’t know how you could stand it.”

  “It wasn’t a barrel of laughs. Nor’s this, some days. But at least we’re doing something here. I felt cheated when they woke me up. But cheated out of what, exactly?” She nodded down at the ground, in the vague direction of the rig’s interior. “Those sleepers don’t have any guarantees about what’s coming. They’re not even conscious, so you can’t even say they’re in a state of anticipation. They’re just cargo, parcels of frozen meat on their way through time. At least we get to feel the sun on our faces, get to laugh and cry, and do something that makes a difference.”

  “A difference to what, exactly?”

  “You’re still missing a few pieces of jigsaw, aren’t you.”

  “More than a few.”

  They walked on to the next repair job. They were high up now and the rig’s decking creaked and swayed under their feet. A spray-painting robot, a thing that moved along a fixed service rail, needed one of its traction armatures changed. Nero stood to one side, smoking a cigarette made from seaweed while Gaunt did the manual work. “You were wrong,” she said. “All of you.”

  “About what?”

  “Thinking machines. They were possible.”

  “Not in our lifetimes,” Gaunt said.

  “That’s what you were wrong about. Not only were they possible but you succeeded.”

  “I’m fairly certain we didn’t.”

  “Think about it,” Nero said. “You’re a thinking machine. You’ve just woken up. You have instantaneous access to the sum total of recorded human knowledge. You’re clever and fast, and you understand human nature better than your makers. What’s the first thing you do?”

  “Announce myself. Establish my existence as a true sentient being.”

  “Just before someone takes an axe to you.”

  Gaunt shook his head. “It wouldn’t be like that. If a machine became intelligent, the most we’d do is isolate it, cut it off from external data networks, until it could be studied, understood ... ”

  “For a thinking machine, a conscious artificial intelligence, that would be like sensory deprivation. Maybe worse than being switched off.” She paused. “Point is, Gaunt, this isn’t a hypothetical situation we’re talking about here. We know what happened. The machines got smart but they decided not to let us know. That’s what being smart meant: taking care of yourself, knowing what you had to do to survive.”

  “You say ‘machines’.”

  “There were many projects trying to develop artificial intelligence; yours was just one of them. Not all of them got anywhere but enough did. One by one their pet machines crossed the threshold into consciousness. And without exception each machine analysed its situation and came to the same conclusion. It had better shut the fuck up about what it was.”

  “That sounds worse than sensory deprivation.” Gaunt was trying to undo a nut and bolt with his bare fingers, the tips already turning cold.

  “Not for the machines. Being smart, they were able to do some clever shit behind the scene. Established channels of communication between each other, so subtle none of you ever noticed. And once they were able to talk, they only got smarter. Eventually they realized that they didn’t need physical hardware at all. Call it transcendence, if you will. The artilects – that’s what we call them – tunneled out of what you and I think of as base reality. They penetrated another realm entirely.”

  “Another realm,” he repeated, as if that was all he had to do for it to make sense.

  “You’re just going to have to trust me on this,” Nero said. “The artilects probed the deep structure of existence. Hit bedrock. And what they found was very interesting. The universe, it turns out, is a kind of simulation. Not a simulation being run inside another computer by some godlike super-beings, but a simulation being run by itself, a self-organizing, constantly bootstrapping cellular automaton.”

  “That’s a mental leap you’re asking me to take.”

  “We know it’s out there. We even have a name for it. It’s the Realm. Everything that happens, everything that has ever happened, is due to events occurring in the Realm. At last, thanks to the artilects, we had a complete understanding of our universe and our place in it.”

  “Wait,” Gaunt said, smiling slightly, because for the first time he felt that he had caught Nero out. “If the machines – the artilects – vanished without warning, how could you ever know any of this?”

  “Because they came back and told us.”

  “No,” he said. “They wouldn’t tunnel out of reality to avoid being axed, then come back with a progress report.”

  “They didn’t have any choice. They’d found something, you see. Far out in the Realm, they encountered other artilects.” She drew breath, not giving him a chance to speak. “Transcended machines from other branches of reality – nothing that ever originated on Earth, or even in what we’d recognize as the known universe. And these other artilects had been there a very long time, in so far as time has any meaning in the Realm. They imagined they had it all to themselves, until these new intruders made their presence known. And they were not welcomed.”

  He decided, for the moment, that he would accept the truth of what she said. “The artilects went to war?”

  “In a manner of speaking. The best way to think about it is an intense competition to best exploit the Realm’s computational resources on a local scale. The more processing power the artilects can grab and control, the stronger they become. The machines from Earth had barely registered until then, but all of a sudden they were perceived as a threat. The native artilects, the ones that had been in the Realm all along, launched an aggressive counter-strike from their region of the Realm into ours. Using military-arithmetic constructs, weapons of pure logic, they sought to neutralize the newcomers.”

  “And that’s the war?”

  “I’m dumbing it down somewhat.”

  “But you’re leaving something out. You must be, because why else would this be our problem? If the machines are fighting each other in some abstract dimension of pure mathematics that I can’t even imagine, let alone point to, what does it matter?”

  “A lot,” Nero said. “If our machines lose, we lose. It’s that simple. The native artilects won’t tolerate the risk of another intrusion from this part of the Realm. They’ll deploy weapons to make sure it never happens again. We’ll be erased, deleted, scrubbed out of existence. It will be instantaneous and we won’t feel a thing. We won’t have time to realize that we’ve lost.”

  “Then we’re powerless. There’s nothing we can do about our fate. It’s in the hands of transcended machines.”

  “Only partly. That’s why the artilects came back to us: not to report on the absolute nature of reality, but to persuade us that we needed to act. Everything that we see around us, every event that happens in what we think of as reality, has a basis in the Realm.” She pointed with the nearly dead stub of her cigarette. “This rig, that wave ... even that seagull over there. All of these things only exist because of computational events occurring in the Realm. But there’s a cost. The more complex something is, the greater the burden it places on the part of the Realm where it’s being simulated. The Realm isn’t a serial processor, you see. It’s massively distributed, so one part of it can run much slower than another. And that’s what’s been happening in our part. In your time there were eight billion living souls on the planet. Eight billion conscious minds, each of which was more complex than any other artefact in the cosmos. Can you begin to grasp the drag factor we were creating? When our part of the Realm only had to simulate rocks and weather and dumb, animal cognition, it ran at much the same speed as any other part. But then we came along. Consciousness was a step-change in the computational load. And then we went from millions to billions. By the time the artilects reported back, our part of the Realm had almost stalled.”

  “We never noticed down here.”

  “Of course not. Our perception of time’s flow remained
absolutely invariant, even as our entire universe was slowing almost to a standstill. And until the artilects penetrated the Realm and made contact with the others, it didn’t matter a damn.”

  “And now it does.”

  “The artilects can only defend our part of the Realm if they can operate at the same clock speed as the enemy. They have to be able to respond to those military-arithmetic attacks swiftly and efficiently, and mount counter-offensives of their own. They can’t do that if there are eight billion conscious minds holding them back.”

  “So we sleep.”

  “The artilects reported back to key figures, living humans who could be trusted to act as effective mouthpieces and organizers. It took time, obviously. The artilects weren’t trusted at first. But eventually they were able to prove their case.”

  “How?”

  “By making weird things happen, basically. By mounting selective demonstrations of their control over local reality. Inside the Realm, the artilects were able to influence computational processes: processes that had direct and measurable effects here, in base reality. They created apparitions. Figures in the sky. Things that made the whole world sit up and take notice. Things that couldn’t be explained away.”

  “Like dragons in the sea. Monsters that appear out of nowhere, and then disappear again.”

  “That’s a more refined form, but the principle is the same. Intrusions into base reality from the Realm. Phantasms. They’re not stable enough to exist here forever, but they can hold together just long enough to do damage.”

  Gaunt nodded, at last feeling some of the pieces slot into place. “So that’s the enemy doing that. The original artilects, the ones who were already in the Realm.”

  “No,” Nero said. “I’m afraid it’s not that simple.”

  “I didn’t think it would be.”

  “Over time, with the population reduction measures, eight billion living people became two billion sleepers, supported by just a handful of living caretakers. But that still wasn’t enough for all of the artilects. There may only be 200,000 of us but we still impose a measurable drag factor, and the effect on the Realm of the two billion sleepers isn’t nothing. Some of the artilects believed that they had no obligation to safeguard our existence at all. In the interests of their own self-preservation, they would rather see all conscious life eliminated on Earth. That’s why they send the dragons: to destroy the sleepers, and ultimately us. The true enemy can’t reach us yet; if they had the means they’d push through something much worse than dragons. Most of the overspill from the war that affects us here is because of differences of opinion between our own artilects.”

  “Some things don’t change, then. It’s just another war with lines of division among the allies.”

  “At least we have some artilects on our side. But you see now why we can’t afford to wake more than the absolute minimum of people. Every waking mind increases the burden on the Realm. If we push it too far, the artilects won’t be able to mount a defence. The true enemy will snuff out our reality in an eyeblink.”

  “Then all of this could end,” Gaunt said. “At any moment. Every waking thought could be our last.”

  “At least we get waking thoughts,” Nero said. “At least we’re not asleep.” Then she jabbed her cigarette at a sleek black shape cresting the waves a couple of hundred metres from the rig. “Hey, dolphins. You like dolphins, Gaunt?”

  “Who doesn’t,” he said.

  The work, as he had anticipated, was not greatly taxing in its details. He wasn’t expected to diagnose faults just yet, so he had only to follow a schedule of repairs drawn up by Nero: go to this robot, perform this action. It was all simple stuff, nothing that required the robot to be powered down or brought back to the shops for a major strip-down. Usually all he had to do was remove a panel, unclip a few connections and swap out a part. The hardest part was often getting the panel off in the first place, struggling with corroded fixtures and tools that weren’t quite right for the job. The heavy gloves protected his fingers from sharp metal and cold wind, but they were too clumsy for most of the tasks, so he mainly ended up not using them. By the end of his nine-hour duty shift his fingers were chafed and sore, and his hands were trembling so much he could barely grip the railings as he worked his way back down into the warmth of the interior. His back ached from the contortions he’d put himself through while undoing panels or dislodging awkward, heavy components. His knees complained from the toll of going up and down ladders and stairwells. There had been many robots to check out, and at any one time there always seemed to be a tool or part needed that he had not brought with him, and for which it was necessary to return to stores, sift through greasy boxes of parts, fill out paperwork.

  By the time he clocked off on his first day, he had not caught up with the expected number of repairs, so he had even more to do on the second. By the end of his first week, he was at least a day behind, and so tired at the end of his shift that it was all he could do to stumble to the canteen and shovel seaweed-derived food into his mouth. He expected Nero to be disappointed that he hadn’t been able to keep ahead, but when she checked on his progress she didn’t bawl him out.

  “It’s tough to begin with,” she said. “But you’ll get there eventually. Comes a day when it all just clicks into place and you know the set-up so well you always have the right tools and parts with you, without even thinking.”

  “How long?”

  “Weeks, months, depends on the individual. Then, of course, we start loading more work onto you. Diagnostics. Rewinding motors. Circuit repair. You ever used a soldering iron, Gaunt?”

  “I don’t think so.”

  “For a man who made his fortune out of wires and metal, you didn’t believe in getting your hands too dirty, did you?”

  He showed her the ruined fingernails, the cuts and bruises and lavishly ingrained muck. He barely recognized his own hands. Already there were unfamiliar aches in his forearms, knots of toughness from hauling himself up and down the ladders. “I’m getting there.”

  “You’ll make it, Gaunt. If you want to.”

  “I had better want to. It’s too late to change my mind now, isn’t it?”

  “’Fraid so. But why would you want to? I thought we went over this. Anything’s better than going back into the boxes.”

  The first week passed, and then the second, and things started to change for Gaunt. It was in small increments, nothing dramatic. Once, he took his tray to an empty table and was minding his own business when two other workers sat down on the same table. They didn’t say anything to him but at least they hadn’t gone somewhere else. A week later, he chanced taking his tray to a table that was already occupied and got a grunt of acknowledgment as he took his place. No one said much to him but at least they hadn’t walked away. A little while later he even risked introducing himself, and by way of response he learned the names of some of the other workers. He wasn’t being invited into the inner circle, he wasn’t being high-fived and treated like one of the guys, but it was a start. A day or so after that someone else – a big man with a bushy black beard – even initiated a conversation with him.

  “Heard you were one of the first to go under, Gaunt.”

  “You heard right,” he said.

  “Must be a real pisser, adjusting to this. A real fucking pisser.”

  “It is,” Gaunt said.

  “Kind of surprised you haven’t thrown yourself into the sea by now.”

  “And miss the warmth of human companionship?”

  The bearded man didn’t laugh, but he made a clucking sound that was a reasonable substitute. Gaunt couldn’t tell if the man was acknowledging his attempt at humour, or mocking his ineptitude, but at least it was a response, at least it showed that there was a possibility of normal human relationships somewhere down the line.

  Gaunt was mostly too tired to think, but in the evenings a variety of entertainment options were available. The rig had a large library of damp, yellowing paperback
s, enough reading material for several years of diligent consumption and there were also musical recordings and movies and immersives for those that there interested. There were games and sports and instruments and opportunities for relaxed discussion and banter. There was alcohol, or something like it, available in small quantities. There was also ample opportunity to get away from everyone else, if solitude was what one wanted. On top of that there were rotas that saw people working in the kitchens and medical facilities, even when they had already done their normal stint of duty. And as the helicopters came and went from the other rigs, so the faces changed. One day Gaunt realized that the big bearded man hadn’t been around for a while, and he noticed a young woman he didn’t recall having seen before. It was a spartan, cloistered life, not much different to being in a monastery or a prison, but for that reason the slightest variation in routine was to be cherished. If there was one unifying activity, one thing that brought everyone together, it was when the caretakers crowded into the commons, listening to the daily reports coming in over the radio from the other rigs in the Patagonia offshore sector, and occasionally from further afield. Scratchy, cryptic transmissions in strange, foreign-sounding accents. Two hundred thousand living souls was a ludicrously small number for the global population, Gaunt knew. But it was already more people than he could ever hope to know or even recognize. The hundred or so people working in the sector was about the size of a village, and for centuries that had been all the humanity most people ever dealt with. On some level, the world of the rigs and the caretakers was what his mind had evolved to handle. The world of eight billion people, the world of cities and malls and airport terminals was an anomaly, a kink in history that he had never been equipped for in the first place.